Audio Research CD 2

Short pins 13 and 14 on the oscillator IC 74HCU04.
Shorten the COAX cable from the LClock kit to about 20 cm (8 Inches). Remove insulation, and connect the
screen of the cable to pin 7 of the HCU04. The inner conductor is connected to pin 8 as
shown.

Connect the red wire to the left pin of 7805 as shown
on this photo. Connect the other end of this red wire to +12V in on LClock XO3, it is the screw terminal
furthest away from the orange relay. IMPORTANT: cut pin 8 of 74HCU04 on the upper side of the PCB. Should
you at some point wish to reverse your upgrade, the LClock XO 3 kit for Audio Research 2 contains a new
74HCU04 for replacement. Anyway a new HCU04 should not cost you more than 1$ in any electronics parts
store.

Your player is now ready for operation! When you
connect power, the blue LED on LClock XO3 will light up after about 10 seconds to indicate that power is
OK. After one or two days you will experience the highest level of sound quality
improvements.